fix http call response crash (envoyproxy#455)

Signed-off-by: Pengyuan Bian <bianpengyuan@google.com>
bianpengyuan · May 15, 2020 · d1ef68a · d1ef68a
1 parent 6144102
commit d1ef68a
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/source/extensions/common/wasm/context.cc b/source/extensions/common/wasm/context.cc
@@ -1772,7 +1772,8 @@ void Context::setEncoderFilterCallbacks(Envoy::Http::StreamEncoderFilterCallback
 
 void Context::onHttpCallSuccess(uint32_t token, Envoy::Http::ResponseMessagePtr& response) {
   http_call_response_ = &response;
-  onHttpCallResponse(token, response->headers().size(), response->body()->length(),
+  uint32_t body_size = response->body() ? response->body()->length() : 0;
+  onHttpCallResponse(token, response->headers().size(), body_size,
                      headerSize(response->trailers()));
   http_call_response_ = nullptr;
   http_request_.erase(token);